C. lutea may refer to:
Caesalpinia lutea, a plant with zygomorphic flowers Calathea lutea, a prayer plant Calea lutea, a New World plant Callechelys lutea, a worm eel Calligenia lutea, an Asian moth Calocera lutea, a jelly fungus Calostemma lutea, a perennial plant Canna lutea, a garden plant Caradrina lutea, a Eurasian moth Carex lutea, a sedge endemic to North Carolina Cariblatta lutea, a small cockroach Castnia lutea, a castniid moth Catananche lutea, a plant native to the Mediterranean Cautleya lutea, a perennial plant Cautor lutea, a sea snail Ceresa lutea, a buffalo treehopper Ceromya lutea, a tachinid fly Chionaspis lutea, a scale insect Chrysolina lutea, a leaf beetle Ciniflella lutea, a three-clawed spider Cladrastis lutea, a deciduous tree Cleome lutea, an annual wildflower Conaliamorpha lutea, a tumbling flower beetle Cordia lutea, a flowering plant Corticarina lutea, a minute brown scavenger beetle Corydalis lutea, a perennial plant Cotyledon lutea, a succulent plant Crimora lutea, a sea slug Cryptocoryne lutea, a plant endemic to Sri Lanka Cudonia lutea, a sac fungus Cuphea lutea, a plant native to the Americas Cyathocline lutea, a flowering plant Cymbiola lutea, a sea snail Cyrestis lutea, an Indonesian butterfly